//#include "encoder.h"
#include "encoderlib.h"
//#include "grader.cpp"
int get_val(int x,int l,int r){
int ret1 = 0;
for(int i=l;i<=r;i++)
if((1<<i)&x)ret1 |= 1<<(i-l);
return ret1;
}
void encode(int N, int M[])
{
int n = N;
for(int i=0;i<n;i++){
int val = i<<4;
for(int j=0;j<4;j++){
int val1 = val;
val1 |= j<<2;
val1 |= get_val(M[i],j*2,j*2+1);
send(val1);
}
}
}
//#include "decoder.h"
#include "decoderlib.h"
#include <bits/stdc++.h>
using namespace std;
int get_val1(int x,int l,int r){
int ret1 = 0;
for(int i=l;i<=r;i++)
if((1<<i)&x)ret1 |= 1<<(i-l);
return ret1;
}
void decode(int N, int L, int X[])
{
sort(X,X+L);
for(int i=0;i<L;i++){
//printf("%d ",X[i]);
if(i%4!=0)continue;
int val = 0;
for(int j=i;j<i+4;j++){
val |= get_val1(X[j],0,1)<<(j-i)*2;
//printf("%d ",val);
}
//puts("");
//printf("%d ",val);
output(val);
}
}
